Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
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Shop Pro Shocks At Speedway Motors

Since 1983 Pro Shocks has been the world leader in shock technology and innovation. Using a unique blend of engineering, on track testing, and technical experience, Pro Shocks stands heads above the competition in quality and performance. Find a full selection of Pro Shocks and Pro Shock parts at the best prices at Speedway Motors.

Featured Products
Pro Shocks SM400 Chrome Mustang II Replacement Shock
Pro Shocks SM400 Chrome Mustang II Replacement Shock
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Stock mount style, modern gas cell shock. Fits where your original Mustang II shock went. Lower mount accepts a 7/16" bolt. Has a 10" ride height.

Pro Shocks SM300 Pro Street Rod Shock, 9 Inch Ride Height
Pro Shocks SM300 Pro Street Rod Shock, 9 Inch Ride Height
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Polished, chrome plated steel body shocks with 5/8" I.D. urethane bushings. Includes steel sleeves for use with 1/2" mounting hardware.

Note: Not for use with coil-over springs.

Pro Street Rod Shock Chart (GIF)

Pro Shocks SM401 Pro Street Rod Shock, 10-1/2 Inch Ride Height
Pro Shocks SM401 Pro Street Rod Shock, 10-1/2 Inch Ride Height
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Polished, chrome plated steel body shocks with 5/8" I.D. urethane bushings. Includes steel sleeves for use with 1/2" mounting hardware.

Note: Not for use with coil-over springs.

Pro Street Rod Shock Chart (GIF)

Pro Shocks SM500 Pro Street Rod Shock, 12 Inch Ride Height
Pro Shocks SM500 Pro Street Rod Shock, 12 Inch Ride Height
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Polished, chrome plated steel body shocks with 5/8" I.D. urethane bushings. Includes steel sleeves for use with 1/2" mounting hardware.

Note: Not for use with coil-over springs.

Pro Street Rod Shock Chart (GIF)

"Pro Shocks" Page 1 of 9

  • Pro Shocks SS100A PRO Street Stock Shock, Front, Adjustable
    Pro Shocks SS100A PRO Street Stock Shock, Front, Adjustable
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    Pro street stock shocks are designed to replace the stock shocks in the original mounting locations. Three-way adjustable design with easy up, 50/50 and tie-down settings.

    To adjust compress the shaft all the way in (collapsed). Keep light pressure on the collapsed shaft and turn counter-clockwise until you feel tang drop into slot. As you rotate clockwise there will be 3 sets of 3 different adjustments (9 positions). Continue to rotate until the mark on the shaft aligns with the desired dampening letter, marked on the shock body. If in question you will note the difference by hand stroking the shaft in and out.

    Pro Shock Application Chart (GIF)

  • Pro Shocks C-500 Stud Cover for Shocks
    Pro Shocks C-500 Stud Cover for Shocks
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                Polished aluminum. Trick way to clean up frame area on your Mustang II! Fits any 3/8" x 24 thread studs.
            
  • Pro Shocks SS100 PRO Street Stock Shock, Front, Non-Adjustable
    Pro Shocks SS100 PRO Street Stock Shock, Front, Non-Adjustable
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    Pro street stock shocks are designed to replace the stock shocks in the original mounting locations. Non-adjsutable design featues extra heavy damping designed for the punishment of street stock racing.

    Pro Shock Application Chart (GIF)

  • Pro Shocks SS300 Pro Street Stock Shock, Pinto Front
    Pro Shocks SS300 Pro Street Stock Shock, Pinto Front
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    Pro street stock shocks are  non-adjustable. Designed to replace the stock shocks in the original mounting locations. They have extra heavy damping, designed for the punishment of Street Stock racing.

    For 1971-80 Pinto and 1974-78 Mustang II.

  • Pro Shocks SS200 Pro Non-Adjustable Street Stock Rear Shock
    Pro Shocks SS200 Pro Non-Adjustable Street Stock Rear Shock
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    Designed to replace the stock shocks in the original mounting locations. They have extra heavy damping, designed for the punishment of Street Stock racing.

  • 8 Inch Spring for Pro Mustang II Coilovers
    8 Inch Spring for Pro Mustang II Coilovers
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                Special tapered spring for Pro Shocks Mustang II Coilover Shocks 582-34300. Available in 8" length and are chrome plated.
            
  • Pro Shocks SB631 Small Body Steel Shock, 6 Inch Stroke, Comp 3, Reb 1
    Pro Shocks SB631 Small Body Steel Shock, 6 Inch Stroke, Comp 3, Reb 1
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    Pro Steel small body shocks have a non-adjustable zinc plated gas cell shock. Carbon steel shaft is chromed and centerless ground for longer seal life. Features a unique 1/2" removable bearing mount. Shocks are sold less bearing ends. OK for use with coil overs.  1.63 diameter.

    6" Stroke -- Compression Length: 11.65", Extension Length: 17.65"

    Pro Small Steel Shock Chart Application (GIF)

  • Pro Shocks C375 Coil-over Kit for SBA Small Body Shock
    Pro Shocks C375 Coil-over Kit for SBA Small Body Shock
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    For early design Pro small body smooth aluminum shocks that have retaining clip groove, for 1-7/8" I.D. springs. 4" in length. SBA shocks are 1.63" O.D.

    Note: Current Pro small body smooth aluminum shocks do not have the retaining clip groove and therefore are a non-coilover design shock. If a coil-over shock is required, a threaded body shock must be used in conjunction with coil-over kit 582-C330 for 1-7/8" springs or 582-C335 for 2-1/2" springs.

    Coil-Over Mounting Guide (GIF)

  • Pro Shocks PG753 Pro PG Series Steel Shock-7 Inch Stroke, Comp 5/Reb 3
    Pro Shocks PG753 Pro PG Series Steel Shock-7 Inch Stroke, Comp 5/Reb 3
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    These steel-bodied Pro Gas mono-tube shocks from Pro Shocks have a state-of-the-art design with a high-tech floating piston that avoids dumping and cavitation. They are the only gas shocks that can be run with high gas pressure as well as any amount of low pressure, all the way down to zero.

    In fact, Pro Gas shocks will continue to provide 100% dampening even with a loss of gas pressure. This 7" stroke length has a variety of dampening rates.

    • Compressed length: 12-1/2"
    • Extended Length: 19-1/2"

    Rebuildable and revalvable through Pro Shocks!

  • Pro Shocks AC750B Large Aluminum Threaded, 7 Inch Shock, Comp 5/Reb 5
    Pro Shocks AC750B Large Aluminum Threaded, 7 Inch Shock, Comp 5/Reb 5
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    Threaded aluminum body shocks are just the ticket for late models. Sold with bearing ends.

    • 7" stroke
    • 2.00 diameter shocks
    • 12-3/4" comp. length
    • 19-1/2" ext. length

    Double Adjustable Rebound Shock Graph (GIF)

    Double Adj. Rebound Application Chart (GIF)

     

  • Pro Shocks WB74BK Large Body Steel Shock, 7 Inch Stroke, Comp 4/Reb 4
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    Pro Shocks WB74BK Large Body Steel Shock, 7 Inch Stroke, Comp 4/Reb 4
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    The newly redesigned PRO WB series steel shocks now feature hardened shafts with a removable rod end while still maintaining their superior, yet economical gas cell design.  A snap ring groove has also been added to allow the use of a coilover kit.  These are ideal for IMCA Modified-type race cars.

    • Compression Length: 13", Extension Length: 20"
    • Compression 4, Rebound 4

    Pro Welded Bearing Shock Chart Application (GIF)

    Notes

    Do not attempt to modify or add snap ring grooves as this will cause the shock absorber to leak.  Pro will not warranty any shocks with added or modified grooves.
  • Pro Shocks PG740 Pro PG Series Steel Shock-7 Inch Stroke, Comp 4/Reb 4
    Pro Shocks PG740 Pro PG Series Steel Shock-7 Inch Stroke, Comp 4/Reb 4
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    These steel-bodied Pro Gas mono-tube shocks from Pro Shocks have a state-of-the-art design with a high-tech floating piston that avoids dumping and cavitation. They are the only gas shocks that can be run with high gas pressure as well as any amount of low pressure, all the way down to zero.

    In fact, Pro Gas shocks will continue to provide 100% dampening even with a loss of gas pressure. This 7" stroke length has a variety of dampening rates.

    • Compressed length: 12-1/2"
    • Extended Length: 19-1/2"

    Rebuildable and revalvable through Pro Shocks!

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